/* Definitions for C parsing and type checking.
- Copyright (C) 1987, 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
#ifndef _C_TREE_H
#define _C_TREE_H
+#include "c-common.h"
+
/* Language-dependent contents of an identifier. */
/* The limbo_value is used for block level extern declarations, which need
#define C_TYPE_VARIABLE_SIZE(type) TYPE_LANG_FLAG_1 (type)
#define C_DECL_VARIABLE_SIZE(type) DECL_LANG_FLAG_0 (type)
-/* Record in each node resulting from a binary operator
- what operator was specified for it. */
-#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
-
#if 0 /* Not used. */
/* Record whether a decl for a function or function pointer has
already been mentioned (in a warning) because it was called
/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
#define DECL_C_BIT_FIELD(NODE) DECL_LANG_FLAG_4 (NODE)
-/* Nonzero if the type T promotes to itself.
- ANSI C states explicitly the list of types that promote;
- in particular, short promotes to int even if they have the same width. */
-#define C_PROMOTING_INTEGER_TYPE_P(t) \
- (TREE_CODE ((t)) == INTEGER_TYPE \
- && (TYPE_MAIN_VARIANT (t) == char_type_node \
- || TYPE_MAIN_VARIANT (t) == signed_char_type_node \
- || TYPE_MAIN_VARIANT (t) == unsigned_char_type_node \
- || TYPE_MAIN_VARIANT (t) == short_integer_type_node \
- || TYPE_MAIN_VARIANT (t) == short_unsigned_type_node))
-
/* In a VAR_DECL, means the variable is really an iterator. */
#define ITERATOR_P(D) (DECL_LANG_FLAG_4(D))
#define ITERATOR_BOUND_P(NODE) ((NODE)->common.readonly_flag)
\f
/* in c-lang.c and objc-act.c */
-extern tree lookup_interface PROTO((tree));
-extern tree is_class_name PROTO((tree));
-extern void maybe_objc_check_decl PROTO((tree));
-extern void finish_file PROTO((void));
-extern int maybe_objc_comptypes PROTO((tree, tree, int));
-extern tree maybe_building_objc_message_expr PROTO((void));
-extern tree maybe_objc_method_name PROTO((tree));
-extern int recognize_objc_keyword PROTO((void));
-extern tree build_objc_string PROTO((int, char *));
+extern tree lookup_interface PARAMS ((tree));
+extern tree is_class_name PARAMS ((tree));
+extern void maybe_objc_check_decl PARAMS ((tree));
+extern void finish_file PARAMS ((void));
+extern int maybe_objc_comptypes PARAMS ((tree, tree, int));
+extern tree maybe_building_objc_message_expr PARAMS ((void));
+extern tree maybe_objc_method_name PARAMS ((tree));
+extern int recognize_objc_keyword PARAMS ((void));
+extern tree lookup_objc_ivar PARAMS ((tree));
\f
-/* in c-aux-info.c */
-extern void gen_aux_info_record PROTO((tree, int, int, int));
-
-/* in c-common.c */
-extern void declare_function_name PROTO((void));
-extern void decl_attributes PROTO((tree, tree, tree));
-extern void init_function_format_info PROTO((void));
-extern void check_function_format PROTO((tree, tree, tree));
-/* Print an error message for invalid operands to arith operation CODE.
- NOP_EXPR is used as a special case (see truthvalue_conversion). */
-extern void binary_op_error PROTO((enum tree_code));
-extern void c_expand_expr_stmt PROTO((tree));
-extern void c_expand_start_cond PROTO((tree, int, int));
-extern void c_expand_start_else PROTO((void));
-extern void c_expand_end_cond PROTO((void));
-/* Validate the expression after `case' and apply default promotions. */
-extern tree check_case_value PROTO((tree));
-/* Concatenate a list of STRING_CST nodes into one STRING_CST. */
-extern tree combine_strings PROTO((tree));
-extern void constant_expression_warning PROTO((tree));
-extern tree convert_and_check PROTO((tree, tree));
-extern void overflow_warning PROTO((tree));
-extern void unsigned_conversion_warning PROTO((tree, tree));
-/* Read the rest of the current #-directive line. */
-#if USE_CPPLIB
-extern char *get_directive_line PROTO((void));
-#define GET_DIRECTIVE_LINE() get_directive_line ()
-#else
-extern char *get_directive_line PROTO((FILE *));
-#define GET_DIRECTIVE_LINE() get_directive_line (finput)
-#endif
+/* in c-parse.in */
+extern void c_parse_init PARAMS ((void));
-/* Subroutine of build_binary_op, used for comparison operations.
- See if the operands have both been converted from subword integer types
- and, if so, perhaps change them both back to their original type. */
-extern tree shorten_compare PROTO((tree *, tree *, tree *, enum tree_code *));
-/* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
- or validate its data type for an `if' or `while' statement or ?..: exp. */
-extern tree truthvalue_conversion PROTO((tree));
-extern tree type_for_mode PROTO((enum machine_mode, int));
-extern tree type_for_size PROTO((unsigned, int));
+/* in c-aux-info.c */
+extern void gen_aux_info_record PARAMS ((tree, int, int, int));
/* in c-convert.c */
-extern tree convert PROTO((tree, tree));
+extern tree convert PARAMS ((tree, tree));
/* in c-decl.c */
-/* Standard named or nameless data types of the C compiler. */
-extern tree char_array_type_node;
-extern tree char_type_node;
-extern tree const_ptr_type_node;
-extern tree const_string_type_node;
-extern tree default_function_type;
-extern tree double_ftype_double;
-extern tree double_ftype_double_double;
-extern tree double_type_node;
-extern tree float_type_node;
-extern tree intTI_type_node;
-extern tree intDI_type_node;
-extern tree intHI_type_node;
-extern tree intQI_type_node;
-extern tree intSI_type_node;
-extern tree int_array_type_node;
-extern tree int_ftype_cptr_cptr_sizet;
-extern tree int_ftype_int;
-extern tree int_ftype_ptr_ptr_int;
-extern tree int_ftype_string_string;
-extern tree integer_type_node;
-extern tree long_double_type_node;
-extern tree long_ftype_long;
-extern tree long_integer_type_node;
-extern tree long_long_integer_type_node;
-extern tree long_long_unsigned_type_node;
-extern tree long_unsigned_type_node;
-extern tree complex_integer_type_node;
-extern tree complex_float_type_node;
-extern tree complex_double_type_node;
-extern tree complex_long_double_type_node;
-extern tree ptr_type_node;
-extern tree ptrdiff_type_node;
-extern tree short_integer_type_node;
-extern tree short_unsigned_type_node;
-extern tree signed_char_type_node;
-extern tree signed_wchar_type_node;
-extern tree string_ftype_ptr_ptr;
-extern tree string_type_node;
-extern tree unsigned_char_type_node;
-extern tree unsigned_intTI_type_node;
-extern tree unsigned_intDI_type_node;
-extern tree unsigned_intHI_type_node;
-extern tree unsigned_intQI_type_node;
-extern tree unsigned_intSI_type_node;
-extern tree unsigned_type_node;
-extern tree unsigned_wchar_type_node;
-extern tree void_ftype_ptr_int_int;
-extern tree void_ftype_ptr_ptr_int;
-extern tree void_type_node;
-extern tree wchar_array_type_node;
-extern tree wchar_type_node;
-extern tree boolean_type_node;
-extern tree boolean_true_node;
-extern tree boolean_false_node;
-
-extern tree build_enumerator PROTO((tree, tree));
-/* Declare a predefined function. Return the declaration. */
-extern tree builtin_function PROTO((char *, tree, enum built_in_function function_, char *));
-/* Add qualifiers to a type, in the fashion for C. */
-extern tree c_build_type_variant PROTO((tree, int, int));
-extern int c_decode_option PROTO((int, char **));
-extern void c_mark_varargs PROTO((void));
-extern tree check_identifier PROTO((tree, tree));
-extern void clear_parm_order PROTO((void));
-extern tree combine_parm_decls PROTO((tree, tree, int));
-extern int complete_array_type PROTO((tree, tree, int));
-extern void declare_parm_level PROTO((int));
-extern tree define_label PROTO((char *, int, tree));
-extern void delete_block PROTO((tree));
-extern void finish_decl PROTO((tree, tree, tree));
-extern void finish_decl_top_level PROTO((tree, tree, tree));
-extern tree finish_enum PROTO((tree, tree, tree));
-extern void finish_function PROTO((int));
-extern tree finish_struct PROTO((tree, tree, tree));
-extern tree get_parm_info PROTO((int));
-extern tree getdecls PROTO((void));
-extern tree gettags PROTO((void));
-extern int global_bindings_p PROTO((void));
-extern tree grokfield PROTO((char *, int, tree, tree, tree));
-extern tree groktypename PROTO((tree));
-extern tree groktypename_in_parm_context PROTO((tree));
-extern tree implicitly_declare PROTO((tree));
-extern int in_parm_level_p PROTO((void));
-extern void init_decl_processing PROTO((void));
-extern void insert_block PROTO((tree));
-extern void keep_next_level PROTO((void));
-extern int kept_level_p PROTO((void));
-extern tree lookup_label PROTO((tree));
-extern tree lookup_name PROTO((tree));
-extern tree lookup_name_current_level PROTO((tree));
-extern tree lookup_name_current_level_global PROTO((tree));
-extern tree maybe_build_cleanup PROTO((tree));
-extern void parmlist_tags_warning PROTO((void));
-extern void pending_xref_error PROTO((void));
-extern void pop_c_function_context PROTO((void));
-extern void pop_label_level PROTO((void));
-extern tree poplevel PROTO((int, int, int));
-extern void print_lang_decl PROTO((FILE *, tree, int));
-extern void print_lang_identifier PROTO((FILE *, tree, int));
-extern void print_lang_type PROTO((FILE *, tree, int));
-extern void push_c_function_context PROTO((void));
-extern void push_label_level PROTO((void));
-extern void push_parm_decl PROTO((tree));
-extern tree pushdecl PROTO((tree));
-extern tree pushdecl_top_level PROTO((tree));
-extern void pushlevel PROTO((int));
-extern void pushtag PROTO((tree, tree));
-extern void set_block PROTO((tree));
-extern tree shadow_label PROTO((tree));
-extern void shadow_record_fields PROTO((tree));
-extern void shadow_tag PROTO((tree));
-extern void shadow_tag_warned PROTO((tree, int));
-extern tree start_enum PROTO((tree));
-extern int start_function PROTO((tree, tree, tree,
- tree, int));
-extern tree start_decl PROTO((tree, tree, int,
- tree, tree));
-extern tree start_struct PROTO((enum tree_code, tree));
-extern void store_parm_decls PROTO((void));
-extern tree xref_tag PROTO((enum tree_code, tree));
+extern tree build_enumerator PARAMS ((tree, tree));
+
+#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
+ c_build_qualified_type (TYPE, \
+ ((CONST_P) ? TYPE_QUAL_CONST : 0) | \
+ ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
+extern int c_decode_option PARAMS ((int, char **));
+extern void c_mark_varargs PARAMS ((void));
+extern tree check_identifier PARAMS ((tree, tree));
+extern void clear_parm_order PARAMS ((void));
+extern tree combine_parm_decls PARAMS ((tree, tree, int));
+extern int complete_array_type PARAMS ((tree, tree, int));
+extern void declare_parm_level PARAMS ((int));
+extern tree define_label PARAMS ((const char *, int,
+ tree));
+extern void delete_block PARAMS ((tree));
+extern void finish_decl PARAMS ((tree, tree, tree));
+extern void finish_decl_top_level PARAMS ((tree, tree, tree));
+extern tree finish_enum PARAMS ((tree, tree, tree));
+extern void finish_function PARAMS ((int));
+extern tree finish_struct PARAMS ((tree, tree, tree));
+extern tree get_parm_info PARAMS ((int));
+extern tree getdecls PARAMS ((void));
+extern tree gettags PARAMS ((void));
+extern int global_bindings_p PARAMS ((void));
+extern tree grokfield PARAMS ((const char *, int, tree, tree, tree));
+extern tree groktypename PARAMS ((tree));
+extern tree groktypename_in_parm_context PARAMS ((tree));
+extern tree implicitly_declare PARAMS ((tree));
+extern void implicit_decl_warning PARAMS ((tree));
+extern int in_parm_level_p PARAMS ((void));
+extern void init_decl_processing PARAMS ((void));
+extern void insert_block PARAMS ((tree));
+extern void keep_next_level PARAMS ((void));
+extern int kept_level_p PARAMS ((void));
+extern tree lookup_label PARAMS ((tree));
+extern tree lookup_name PARAMS ((tree));
+extern tree lookup_name_current_level PARAMS ((tree));
+extern tree lookup_name_current_level_global PARAMS ((tree));
+extern tree maybe_build_cleanup PARAMS ((tree));
+extern void parmlist_tags_warning PARAMS ((void));
+extern void pending_xref_error PARAMS ((void));
+extern void mark_c_function_context PARAMS ((struct function *));
+extern void push_c_function_context PARAMS ((struct function *));
+extern void pop_c_function_context PARAMS ((struct function *));
+extern void pop_label_level PARAMS ((void));
+extern tree poplevel PARAMS ((int, int, int));
+extern void print_lang_decl PARAMS ((FILE *, tree, int));
+extern void print_lang_identifier PARAMS ((FILE *, tree, int));
+extern void print_lang_type PARAMS ((FILE *, tree, int));
+extern void push_label_level PARAMS ((void));
+extern void push_parm_decl PARAMS ((tree));
+extern tree pushdecl PARAMS ((tree));
+extern tree pushdecl_top_level PARAMS ((tree));
+extern void pushlevel PARAMS ((int));
+extern void pushtag PARAMS ((tree, tree));
+extern void set_block PARAMS ((tree));
+extern tree shadow_label PARAMS ((tree));
+extern void shadow_record_fields PARAMS ((tree));
+extern void shadow_tag PARAMS ((tree));
+extern void shadow_tag_warned PARAMS ((tree, int));
+extern tree start_enum PARAMS ((tree));
+extern int start_function PARAMS ((tree, tree, tree,
+ tree));
+extern tree start_decl PARAMS ((tree, tree, int,
+ tree, tree));
+extern tree start_struct PARAMS ((enum tree_code, tree));
+extern void store_parm_decls PARAMS ((void));
+extern tree xref_tag PARAMS ((enum tree_code, tree));
/* in c-typeck.c */
-extern tree require_complete_type PROTO((tree));
-extern void incomplete_type_error PROTO((tree, tree));
-/* Given two integer or real types, return the type for their sum.
- Given two compatible ANSI C types, returns the merged type. */
-extern tree common_type PROTO((tree, tree));
-extern int comptypes PROTO((tree, tree));
-extern int self_promoting_args_p PROTO((tree));
-extern tree c_sizeof PROTO((tree));
-extern tree c_sizeof_nowarn PROTO((tree));
-extern tree c_size_in_bytes PROTO((tree));
-extern tree c_alignof PROTO((tree));
-extern tree c_alignof_expr PROTO((tree));
-extern tree default_conversion PROTO((tree));
-extern tree build_component_ref PROTO((tree, tree));
-extern tree build_indirect_ref PROTO((tree, char *));
-extern tree build_array_ref PROTO((tree, tree));
-extern tree build_function_call PROTO((tree, tree));
-extern tree parser_build_binary_op PROTO((enum tree_code,
- tree, tree));
-extern tree build_binary_op PROTO((enum tree_code,
- tree, tree, int));
-extern tree build_unary_op PROTO((enum tree_code,
- tree, int));
-extern int lvalue_p PROTO((tree));
-extern int lvalue_or_else PROTO((tree, char *));
-extern void readonly_warning PROTO((tree, char *));
-extern int mark_addressable PROTO((tree));
-extern tree build_conditional_expr PROTO((tree, tree, tree));
-extern tree build_compound_expr PROTO((tree));
-extern tree build_c_cast PROTO((tree, tree));
-extern tree build_modify_expr PROTO((tree, enum tree_code,
- tree));
-extern tree initializer_constant_valid_p PROTO((tree, tree));
-extern void store_init_value PROTO((tree, tree));
-extern void error_init PROTO((char *, char *,
- char *));
-extern void pedwarn_init PROTO((char *, char *,
- char *));
-extern void start_init PROTO((tree, tree, int));
-extern void finish_init PROTO((void));
-extern void really_start_incremental_init PROTO((tree));
-extern void push_init_level PROTO((int));
-extern tree pop_init_level PROTO((int));
-extern void set_init_index PROTO((tree, tree));
-extern void set_init_label PROTO((tree));
-extern void process_init_element PROTO((tree));
-extern void c_expand_asm_operands PROTO((tree, tree, tree, tree,
- int, char *, int));
-extern void c_expand_return PROTO((tree));
-extern tree c_expand_start_case PROTO((tree));
+extern tree require_complete_type PARAMS ((tree));
+extern void incomplete_type_error PARAMS ((tree, tree));
+extern int comptypes PARAMS ((tree, tree));
+extern tree c_sizeof PARAMS ((tree));
+extern tree c_sizeof_nowarn PARAMS ((tree));
+extern tree c_size_in_bytes PARAMS ((tree));
+extern tree c_alignof PARAMS ((tree));
+extern tree c_alignof_expr PARAMS ((tree));
+extern tree build_component_ref PARAMS ((tree, tree));
+extern tree build_indirect_ref PARAMS ((tree, const char *));
+extern tree build_array_ref PARAMS ((tree, tree));
+extern tree build_external_ref PARAMS ((tree, int));
+extern tree build_function_call PARAMS ((tree, tree));
+extern tree parser_build_binary_op PARAMS ((enum tree_code,
+ tree, tree));
+extern int lvalue_or_else PARAMS ((tree, const char *));
+extern void readonly_warning PARAMS ((tree, const char *));
+extern int mark_addressable PARAMS ((tree));
+extern tree build_conditional_expr PARAMS ((tree, tree, tree));
+extern tree build_compound_expr PARAMS ((tree));
+extern tree build_c_cast PARAMS ((tree, tree));
+extern tree build_modify_expr PARAMS ((tree, enum tree_code,
+ tree));
+extern void store_init_value PARAMS ((tree, tree));
+extern void error_init PARAMS ((const char *));
+extern void pedwarn_init PARAMS ((const char *));
+extern void start_init PARAMS ((tree, tree, int));
+extern void finish_init PARAMS ((void));
+extern void really_start_incremental_init PARAMS ((tree));
+extern void push_init_level PARAMS ((int));
+extern tree pop_init_level PARAMS ((int));
+extern void set_init_index PARAMS ((tree, tree));
+extern void set_init_label PARAMS ((tree));
+extern void process_init_element PARAMS ((tree));
+extern void pedwarn_c99 PARAMS ((const char *, ...))
+ ATTRIBUTE_PRINTF_1;
/* in c-iterate.c */
-extern void init_iterators PROTO((void));
-extern void iterator_expand PROTO((tree));
-extern void iterator_for_loop_start PROTO((tree));
-extern void iterator_for_loop_end PROTO((tree));
-extern void iterator_for_loop_record PROTO((tree));
-extern void push_iterator_stack PROTO((void));
-extern void pop_iterator_stack PROTO((void));
+extern void init_iterators PARAMS ((void));
+extern void iterator_expand PARAMS ((tree));
+extern void iterator_for_loop_start PARAMS ((tree));
+extern void iterator_for_loop_end PARAMS ((tree));
+extern void iterator_for_loop_record PARAMS ((tree));
+extern void push_iterator_stack PARAMS ((void));
+extern void pop_iterator_stack PARAMS ((void));
/* Set to 0 at beginning of a function definition, set to 1 if
a return statement that specifies a return value is seen. */
extern int flag_hosted;
-/* Nonzero means ignore `#ident' directives. */
-
-extern int flag_no_ident;
-
/* Nonzero means warn about implicit declarations. */
extern int warn_implicit;
-/* Nonzero means give string constants the type `const char *'
- to get extra warnings from them. These warnings will be too numerous
- to be useful, except in thoroughly ANSIfied programs. */
-
-extern int warn_write_strings;
-
/* Nonzero means warn about sizeof (function) or addition/subtraction
of function pointers. */
extern int warn_bad_function_cast;
-/* Warn about traditional constructs whose meanings changed in ANSI C. */
+/* Warn about functions which might be candidates for attribute noreturn. */
-extern int warn_traditional;
+extern int warn_missing_noreturn;
-/* Warn about *printf or *scanf format/argument anomalies. */
+/* Warn about traditional constructs whose meanings changed in ANSI C. */
-extern int warn_format;
+extern int warn_traditional;
/* Warn about a subscript that has type char. */
extern int warn_char_subscripts;
-/* Warn if a type conversion is done that might have confusing results. */
-
-extern int warn_conversion;
-
/* Warn if main is suspicious. */
extern int warn_main;
-/* Nonzero means do some things the same way PCC does. */
-
-extern int flag_traditional;
-
/* Nonzero means to allow single precision math even if we're generally
being traditional. */
extern int flag_allow_single_precision;
-/* Nonzero means warn about suggesting putting in ()'s. */
-
-extern int warn_parentheses;
-
/* Warn if initializer is not completely bracketed. */
extern int warn_missing_braces;
extern int warn_sign_compare;
-/* Nonzero means this is a function to call to perform comptypes
- on two record types. */
+/* Warn about testing equality of floating point numbers. */
-extern int (*comptypes_record_hook) ();
+extern int warn_float_equal;
+
+/* Warn about multicharacter constants. */
+
+extern int warn_multichar;
+
+/* Warn about long long. */
+
+extern int warn_long_long;
/* Nonzero means we are reading code that came from a system header file. */
extern int system_header_p;
+/* Warn about implicit declarations. 1 = warning, 2 = error. */
+extern int mesg_implicit_function_declaration;
+
/* Nonzero enables objc features. */
-extern int doing_objc_thang;
+#define doing_objc_thang \
+ (c_language == clk_objective_c)
+
+/* In c-decl.c */
+extern void finish_incomplete_decl PARAMS ((tree));
#endif /* not _C_TREE_H */